Diphenyldichloromethane
Diphenyldichloromethane is an organic compound with the formula 2CCl2. It is a colorless solid that is used as a precursor to other organic compounds.
Synthesis
It is prepared from carbon tetrachloride and anhydrous aluminium chloride as catalyst in a double Friedel-Crafts alkylation of benzene. Alternatively,benzophenone is treated with phosphorus pentachloride:
Reactions
It undergoes hydrolysis to benzophenone.Reductive dehalogenation of diphenyldichloromethane with copper or with nickel gives tetraphenylethylene: